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PUGET SOUND GASTROENTEROLOGY, PLLC
NPI 1811914625
Clinic/Center - Ambulatory Surgical in Edmonds, WA

Active since July 16, 2006
21600 HWY 99, SUITE 260, EDMONDS, WA 98026(425) 774-2650(425) 774-2643 Get Directions Write a Review

NPPES record last updated: May 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 16, 2025, Dec 9, 2019 (2 updates tracked since 2019).

About Puget Sound Gastroenterology, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PUGET SOUND GASTROENTEROLOGY, PLLC (NPI 1811914625), doing business as Edmonds Endoscopy Center, is a healthcare organization registered as an ambulatory surgical in Edmonds, Washington and active in the NPI registry since July 2006. The organization lists Alan Oliver, Ceo, as its authorized official.

NPPES Registry Identity

NPI1811914625
Entity TypeOrganization
Primary Taxonomy261QA1903X
Legal Business NamePUGET SOUND GASTROENTEROLOGY, PLLC
Location Address21600 HWY 99, SUITE 260Edmonds, WA 98026-8012
Mailing AddressPo Box 34888Seattle, WA 98124-1888 · (425) 977-4620 · Fax (425) 745-9836
Phone(425) 774-2650
Fax(425) 774-2643
Organization SubpartNo
Authorized OfficialAlan OliverCeo · (786) 530-3820
Enumeration DateJuly 16, 2006
Last NPPES UpdateMay 16, 20252 updates tracked since enumeration
NPPES CertifiedMay 16, 2025
✔ NPI 1811914625 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities
Taxonomy Code261QA1903X
21600 HWY 99, Edmonds, WA 98026
Open in Google Maps ↗

Other Names 1

Doing Business AsEdmonds Endoscopy Center

Other Identifiers 2

Medicaid1045755WA
Other8906971WA · Labor And Industries

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Puget Sound Gastroenterology, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

83

Medicare enrollment records show 83 clinicians reassign Medicare billing to Puget Sound Gastroenterology, PLLC, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 29 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Gastroenterology48
Nurse Practitioner27
Pathology6
Internal Medicine2

Nearest to this location (20)

See all 83
Roberta Aflatooni, ARNP
Nurse Practitioner
NPI 1972581387
21600 HIGHWAY 99 STE 230
Edmonds, WA 98026
(206) 215-4250
✔ PECOS✔ Accepts MedicareSame address
Crystal Bernstein, M.D.
Gastroenterology
NPI 1326019167
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Victoria Gasparyan, ARNP
Nurse Practitioner
NPI 1912268004
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
David Liang, M.D.
Gastroenterology
NPI 1619178027
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Klaus Mergener, M.D.
Gastroenterology
NPI 1578537031
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Jason Schneier, MD
Gastroenterology
NPI 1174544712
21600 HWY 99 SUITE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Jinfeng Guo, MD
Gastroenterology
NPI 1912924739
21600 HWY 99 SUITE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
John Carpenter, MD
Pathology
NPI 1225209471
19000 33RD AVE W STE 230
Lynnwood, WA 98036
(425) 686-7138
✔ PECOS✔ Accepts Medicare2.9 mi
Juliann Mendes, D.O.
Pathology
NPI 1972036234
19000 33RD AVE W STE 230
Lynnwood, WA 98036
(425) 686-7138
✔ PECOS✔ Accepts Medicare2.9 mi
Gregory Bernstein, MD
Gastroenterology
NPI 1598056673
11027 MERIDIAN AVE N STE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.4 mi
Praveen Guturu, MBBS, MD
Gastroenterology
NPI 1285825463
11027 MERIDIAN AVE N STE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.4 mi
Steven Lewis, MD
Gastroenterology
NPI 1497725238
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS6.5 mi
Alexandra Read, MD
Gastroenterology
NPI 1528039989
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS6.5 mi
Darik Taniguchi, M.D.
Gastroenterology
NPI 1750359105
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.5 mi
Wataru Tamura, MD
Gastroenterology
NPI 1073658365
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.5 mi
David Lee, MD
Gastroenterology
NPI 1003844622
11800 NE 128TH ST SUITE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Kimberly Lavender, ARNP
Nurse Practitioner
NPI 1619261930
11800 NE 128TH ST SUITE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
William Michael, APRN
Nurse Practitioner
NPI 1689521254
11800 NE 128TH ST STE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Jennifer Seaman, ARNP
Nurse Practitioner
NPI 1013724244
11800 NE 128TH ST STE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Steven Kane, ARNP
Nurse Practitioner
NPI 1831727361
5350 TALLMAN AVE NW STE 520
Seattle, WA 98107
(206) 215-4250
✔ PECOS✔ Accepts Medicare9.6 mi
See all 83 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
193 services193 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
172 services167 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
166 services166 patients
Colorectal cancer screening; colonoscopy on individual at high risk G0105
Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.
55 services54 patients
Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248
This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.
24 services24 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
22 services22 patients

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Puget Sound Gastroenterology, PLLC's NPI number?

The NPI number for Puget Sound Gastroenterology, PLLC is 1811914625. It was assigned to this organization in the NPPES registry on July 16, 2006. The provider is doing business as Edmonds Endoscopy Center.

Where is Puget Sound Gastroenterology, PLLC located?

Puget Sound Gastroenterology, PLLC is located at 21600 Hwy 99 Suite 260, Edmonds, WA 98026. The listed phone number is (425) 774-2650.

What is Puget Sound Gastroenterology, PLLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

Is Puget Sound Gastroenterology, PLLC enrolled in Medicare?

Yes. Puget Sound Gastroenterology, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Puget Sound Gastroenterology, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 83 clinicians in 4 Medicare specialties reassign their Medicare billing to Puget Sound Gastroenterology, PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Gastroenterology (48), Nurse Practitioner (27) and Pathology (6). Of these, 7 practice at this address and 29 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Puget Sound Gastroenterology, PLLC accept?

Health plans from Providence Health Plan list Puget Sound Gastroenterology, PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Puget Sound Gastroenterology, PLLC was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.